George d



G. D. JORDAN.

CARBURETER.

APPLlCATlON FILED 001'. I0, 1913. RENEWED JUNE 27,1918. 1,381,842.-

Patented June 14, 1921.

2 SHEETS-SHEET I. N

um um G. 0. JORDAN.

CARBURETER.

APPLICATION FILED OCT I0. I913. RENEWED JUNE 2 71 H8.

Patented June 14,1921.

2 SHEETS-SHEET 2.

ternal combustion engines.

running a short while.

UNITED STATES P A T EN T "O F FICJE.

GEORGE D. JORDAN, OF CHEVY CHASE, DISTRICT OF COLUM-BIA,-ASSIGNOR, BYDIRECT AND MESNE ASSIGNMENTS, T0 JORDAN OARBURETOR COMPANY, OF WILMINGTON, DELAW'ARE, .A. CORPORATION, OF DELAWARE.

GARBU BETER.

Application filed October 10, 1913, SerialNo. 794,448.

To (ZZZ "w ham it may concern Be it known thatIpGEoRen 'D. JORDA a citizen of the United States, residing at Chevy Chase, in the District of Columbia, have invented. certain new and useful Improvements in Carbureters; and Thereby declare that the following is a full, clear, and exact description thereof, reference being had to -the accompanying drawings, which form part of this specification.

This invention is a novel improvement in carbureters for use in connection with in- The object of the invention is to provide a carbureterespecially adapted for using kerosene and low, grade oils; and which will insure thorough vaporization of the oiland the production of an explosive mixture which can be entirely consumed and in which the annoying and injurious effects of carbon deposits in the-cylinders and passages will be obviated or very materially lessened.

One novel feature of my carbureter is an oil-heating tube which is primarily heated electrically during initial operation of the engine, but afterward may be heated by passing the exhaust gases through the carbureter jacket, thus enabling the electric current to be cut ofi after the engine has been 7 The oil is thus heated, before vaporization, in its passage from the float chamber to the atomizing valve. 7 v

The oil valve in the carbureter is especially adapted to atomize any raw fuel such as kerosene, which may be used; or to atomize gasolene or light volatile hydrocarbons when not using the carbureter as a vaporizer.

The carbureter may alsobe provided with means for introducing water, in theform of vapor or spray, into the mixture of atomized oil and air to give body to'the mixture and facilitate decomposition of any carbon deposited by lubricating oils in the passages or cylinder. l

- Specification of Letters Patent.

i fully Patented. J une 14, 1921.

Renewed June 27,1918. Serial No. 242,312.

The invention consists in the novel con struction of the carbureter herein after more described; and the accompanying drawings show one practical form of carbureter embodying the invention; and in the claims following the description I summarize the novel features and combinations for which protection is desired.

In said drawings- Figure l is a front view of the complete carbureter. V

Fig. 2 is a right-hand edge View ofFig. 1.

Fig. 3 is a vertical section on line"3-3.

Fig. 4 is a vertical section online 4 4, Fig. 1. r

The main casing of the carbureter is preferably cylindric in cross section and closed at top and bottom. Within this casing and disposed preferably longitudinally and axially thereof is a main air conduit or passage.

2 which may be circular in cross section, and the walls .2 thereof may be cast integral with the walls of the casing, but the walls of the conduit are separated from the side walls of the casing by an annular air space or elongate heating chamber 1 into which chamber the hot exhaust gases may be introduced by means 01" a pipe connected with an opening 1 in the upper part of the casing and which pipe can be connected with the exhaust ducts of. the engine so that the hot gases will be passed through said heating chamber to heat the conduit 2 and the air which passes therethrough. The hot gases may be conducted from the casing through a pipe connected to an outlet 1 in the casing and leading to any suitable point of discharge. The lower end 2* of the conduit may be extended outside of the casing. and its outer end is preferably upturned as shown at 2 so that air may be admitted to the conduit from the exterior of the casing.

The upper end of conduit 2 opens through the top of the casing and is adapted to be connected in the usual manner with the main -valve 2,is a lateral pipe or port 2 which extends through the chamber 1* and coinmunicates with an auxiliary air valve casing 3, having an inlet in its bottom which is normally closed by a valve 3, attached to a stem 3 extending through an adjustable guide-nut 3 tapped through the upper end of the valve casing; the valve stem 3 also extends below the valve'and through a guide bar 3 extending across the air inlet opening; said valve is held normally closed by a spring 3 interposed between the nut and the upper part of the valve and by a spring 3 interposed between the bar 3 and an adjustable nut 3, screwed on the lower end of :the stem. These devices enable the operation of the auxiliary'air valve to be regulated with nicety.

Below the auxiliary air inlet 2, the air conduit 2 is constr cted as at 2 and in the narrowest part'of this constricted portion is an oil inlet 4:, which is controllable by a needle valve 4L, the stem of which extends outside/the casing and is provided with a ]amenut 4-", by which the valve may be fixed in any adjusted positions.

:Th oil chamber 4? of the needle valve communicates through a port 4 with the outlet end of an oil heating tube 5, which is securely confined in the chamber 1 at one side of the conduit 2 and within an enlargement 1 of the casing l. The heating tube or duct 5 may be secured in the casing by having its upper end fitted in a recess in the oil valve wall and its lower end fitted in a plug 1 screwed into an opening in the bottom of the casing; this plug having a threaded nipple l on its outer end, said nipple having an opening communicating with tube 5.

This tube 5 may be made of an T suitable heat-conducting material, and preferably a.

non-conductor of electricity, such as lava, ftntlvltlllll .thebore of the tube 5 I arrange an electric helical heating coil 5", the terminals 5 and 5 of which may be connected by any suitable means with a source of electricity, such as a battery indicated at 5*.

Thiscoil 5 is preferably made of platinum. or nichrome and is adapted to be heated by e the passage of a current of electricity therethrough and Will heat the oil which is supplied to the oil valve through said tube.

Preferably directly opposite the oil. inlet 41- is a water inlet 6 controlled by a needle valve 6", the stem of which is provided with a jam-nut 6"; and the water valve chamber 6 is connected by a port 6 with a nipple (3 that can be connected by a pipe 6 with any suitable water supply; I preferably connect it with the water jacket of the engine, or radiator, not shown, so that the water will be heated before its admission into tube 2.

The carburetor is provided with an oil float chamber 7, preferably formed integral with the casing 1 exterior to the chamber 1, and this float chamber may be closed by a cap plate 7 secured tlierto by means of screws 7", or other suitable means. This float chamber 7 has an inlet port 7 at one side which communicates with an inlet valve trolled by a valve 8 within the valve chamber 7, connected to a valve stem 8" which may be ad ustably connected to one end of a lever S" that extends through the port 7 into chamber 7 and is aivoted at 17 and to r 7 the end of this lever S within the float chamber 7 is connected a float 8, so that when the chamber 7 is properly supplied with oil the float will cause the closing of valve 8; thus the supply of oil is controlled by said float. The oil is conducted from the float chamber 7 through an outlet 7 connected by a pipe 7 with the nipple 1* at the lower end of the tube 5 so that oil is conducted directly from the float chamber through the heating tube 5 to the oil valve.

As a matter of convenience in construction, the casing 1 may be made in any de sired number of sections as may be found most desirable in the manufacture thereof, and it is shown as divided transversely into upper and lower parts at the line 1*.

It will be seen that my carburetor has a long air conduit 2 which is heated by the exhaust gases passed through the chamber i This long hot tube increases the velocity of the air passing therethrough by raising its temperature and because of its comparatively restricted area and as the passage is further constricted at the point a practically complete atomization of the oil and water is effected by the rush of air past the inlets a and 6, the constriction causing the air to act most effectively on the oil or water admitted at this point. The upper part of conduit 2 being completely surr unded by the heating chamber 1 and heated by the hot gases forms a mixing chamber in which the vaporized fuel and air are mixed as they pass 011 to the inlet ports of the engine, insures maintenance of the heat of the vapor and prevents condensation of the explosive mixture or vapors in said conduit.

The outer end 2 of the air conduit 2, and

- the conduit' 2 and the lower end of the downwardly extending portion 3 of the auxiliary air-valve casing may be'connectedby a pipe 9 havinga lateral branch 9 which maybe connectedf-by a'flexible pipe .9 with a suitable air:heaterynot shown; which is preferably heated bythe exhaust gases, and thus Warm air may be suppliedto the conduit 2 andtoth'e auxiliary-air valve 3. By thus supplying the. carbureter with warm air its eflic ien c'y I is increased;

Operation.

When the carbureter :is properly connected with the engine andfthe other parts as described, upon starting the engine the oil in tube 5 'isheated by electric current to almost boiling point, so that whenrit is injected into the tube 2-it will vaporize instantly. After the engine has started, andth'e parts of the carbureter become heated by the exhaust gases, the electric current can be shut off; The air admitted into the conduit 2flows upwardly to the engine, and any extra sup-. ply of air demande'dby theengi'ne is supplied by theauxiliary air valve 3in the usual manner. The carbureter will maintain a high temperature all the time the engine is in use, but the hightemperature of the air and oil admitted into the conduit does not materially affect the temperature of the oil in the float chamber, as the oil is heated in the tube [5 asused'. The water can be used if desired according to the quality of the fuel hydrocarbon employed and the nature and amount of work the engine is expected to perform. Both the water and oilcan be easily controlled by properly adjusting the respective valves.

What I claim is: r

1. In a car'bureter, the combination of a casing having a heating chamber, an air conduit extending through said chamber having a constriction intermediate its length, and a fuel inlet in said constriction;

a valve controlling the fuel supply, a fuel heating tube within and extending through the said heating chamber and co1nmunicating at its outlet with the fuel inlet, an aux- 'iliary air valve, and means forconducting air from said auxiliary air valve into said air duct above the oil inlet.

2. In a carbureter, the combination of a casing having a longitudinal air conduit, and a heating chamber surrounding said conduit, said conduit having a constriction intermediate its length and an oilfinlet in said constriction; a valve' controlling the fuel supply, a fuel heating tube extending through the'saidheating chamber and communicating at its outlet with the fuel inlet,

andimeans for heating-the oilinsaid, tube independently. of the heatain saidheating chamber;

3. In acarbureter, the'combination of, a casinghaving an air: conduit, and a heating chamber surrounding said conduit, said conduit; having a. constriction intermediate its length, afuel inlet in said. constriction, a valve controlling the oil supply, an oil heatingitubre within andiextending through the said heating chamber and communicatingat itsoutlet with said fuel: inlet, meansfor heating-the oil'in said tube independently of the heat in the said. chamber, anauxiliary air valve, and means for conducting'air from said; auxiliary'air valve into said air conduit above the. constriction thereof.

l. Ina carbureter,.the combination of a casing having. a 'heatingchamber, an air conduit extending through said chamber and'hav'ing a fuel. inlet and. a water inlet; valvescontrolling the fuel and water sup ply, an oil heating tubewithin and extendingthroughthe said heating chamber and communicating at its outlet with the fuel inlet, .and means. for. heating the oillin said tube independently of the heat in the, said heating chambere.

5'. In a carbureter, the combination of a casing'havinga centrally disposed air passage, and a chamber surrounding said air conduit, said 'air passage having a constriction intermediate its length, and a fuel inlet and a water inlet in said constriction, valves controllingthe fuel. and water supply; an oil heating tube within and extending through the said heatingchamberand communicating at its outlet with the fuel inlet, an auxiliary air valve communicating with the said air conduit above the constriction thereof, and means for electrically heating the oil in said tube independently of the heat in the said chamber.

6. In a carbureter, the combination of a casing having a heating chamber, an air conduit extending through said chamber having a fuel inlet; a valve controlling the fuel supply, a needle valve chamber, an oil heating tube within and extending through the said. heating chamber beside the air con duit' and communicating with said fuelinlet, an auxiliary air valve, and means for conducting air from said auxiliary air valve into said conduit, a hot air supply pipe connected 'withthe inlet of the auxiliary air valve and With the inlet of the said air conduit. w

7. In a carbureter, the combination of a casing having an air conduit, a heating chamber surrounding said conduit,said conduit'having a'constriction intermediate its length and a fuel inlet in said constriction;

a ne edle'v'alvecontrollng the fuel supply, an

oil heating tube within and extending through the said heating chamber'beside the air conduit-and communicating with said fuelinlet, an auxiliary air valve casing communicating with the said air duct above the constriction thereof, a hot air supply pipe connected with the inlet of the auxiliary air valve and with the inlet of the said air duct, and means fonheating the oil in said tube ]independently of the heat in the said cham- 8. In a carbureter, the combination of a casing having a centrally disposed air passage, and 'a heating chamber surrounding said conduit, said air passage having a constriction intermediate its length and a fuel inlet in said constriction; a needle valve controlling the fuel supply, a needle valve chamber, an oil heating tube extending through the said'heating chamber beside the air passage and communicating with said oil fuel inlet, and means for electrically heating the oil "in said' tube independently of the heat in the said chamber; a float chamber exterior tothe casing, means for supplying oil to said float chamber, a float controlledvalve for regulating the supply of oil to said float chamber, and means for conducting oil from said float chamber into the lower end of said oil heating tube;

, 9. In a carbureter, the combination of a casing having a heating chamber, an air conduit extending therethroughhaving a fuel inlet, a valve controlling the 'fuel supply, an oil heating tube' within and extending through. the said heatingchamber beside the air conduit and communicating with the fuel inlet, an'auxiliary air valve communieating with the said 'air' conduit, a water inlet to the conduit adjacent the fuel inlet, a valve controlling the admission ofvwater; a float chamber exterior to the casing, means for supplying oil to said'fioat' chamber, a

V float controlled valve for regulating the supply of oil to said float chamber, and means for conducting oil from said float chamber into the lower end of said oil heating tube.

10. In a'carbureter, the combination-of a casinghaving, an axially disposed air passage, and a heating chamber surrounding said air passage, said air conduit having a constriction intermediate its length and a fuel inlet in said constriction, a valve controlling the fuel supply, an'oil heating tube within *and extending through the said heating chamber beside the air passage and communicating with the fuel inlet; a water inlet to the constriction of said air duct adjacent the fuel inlet and a needle valve for controlling the admission of water; a. float chamber: exterior to the casing, means for supplying oil to said float chamber, a float controlled valve for'regulating the supply of oil to said float chamber,-and means for conducting oil from said float chamber into the lower end of said oil heating tube; means for electrically heat ing the oil in said tube independently of the heat in the said chamber, an auxiliary air valve exterior to the said casing, and means for conducting air from said auxiliary air valve into said air duct above the constriction thereof;

11. In a carbureter the combination of a casing having an interior air passage and an exterior chamber or passage heated by exhaust gases, a fuel inlet to said )assage, a valve controlling said inlet, a fue heater within the said chamber and beside the air passage and communicating at one end with said fuel inlet and at its other end with a fuel supply; and means for electrically heating this heater independently of the heat in the chamber.

12. In a carbureter the combination of a casing having an interior air passage surrounded by a passage for exhaust gases, a fuel inlet to said passage, a valve controlling said inlet, and an oil heater within the said exhaust gas passage and beside the air passage and communicating with said fuel inlet and with a fuel supply; with an auxiliary air valve chamber communicating with the said air passage, and 'a hot air supply communicating with said auxiliary air valve and with the said passage.

.13. In a carbur'eter the combination of a casing having, an interior air passage surrounded by a heating chamber or passage for exhaust gases, a fuel inlet to said passage, a valve controlling said inlet, a fuel heater within the said heating chamber and beside the air passage and communicating with said fuel inlet and with a fuel supply, and means for electrically heating said heater independently of the heat in the chamber; with an auxiliary air valve chamber communicating with the said air passage,-and a hot air supply communicating with said auxiliary air valve and with the said passage.

14. In a carbureter the combination of a casing having an interior air passage and an exterior chamber heated by exhaust gases, a fuel inlet to said passage, a valve controlling said inlet, and a fuel heater within the said heated chamber and beside the air passage and communicating at one end with said fuel inlet and at its other end with a fuel supply; with an auxiliary air valve-chamber communicating with the said passage, and a hot air supply communicating with said auxiliary air valve and with the said passage.

15. In a carbureter the combination of a casing having an interior air passage and an exterior chamber heated by exhaust gases, a fuel inlet to said passage, a valve controlling said inlet, a fuel heater within the said heated chamber and beside the air passage and communicating at one end with said fuel inlet and at its other end with a fuel supply, and means for electrically heating this heater independently of the heat in the chamber; with an auxiliary air valve chamber communicating with the said passage,

5 and a hot air supply communicating with said auxiliary air valve and With the said passage.

In testimony that I claim the foregoing as my own, I affix my signature in presence of two witnesses.

GEORGE D. JORDAN. Witnesses:

SAML H. HALL, Tnos. C. MENEFEE. 

